Monica A. Diaz, MD

Medicare activity in 2024

Official CMS public-use data for Monica A. Diaz, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Most frequent services

1. Injection, fosaprepitant, 1 mg (J1453)20,400 services
2. Injection, oxaliplatin, 0.5 mg (J9263)13,500 services
3. Injection, dexamethasone sodium phosphate, 1 mg (J1100)1,956 services
4. Injection, palonosetron hcl, 25 mcg (J2469)1,450 services
5. Injection, fluorouracil, 500 mg (J9190)789 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

• High blood pressure75%
• High cholesterol75%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)47%
• Diabetes45%
• Arthritis44%
• Chronic kidney disease39%

Hospitals where Monica A. Diaz works

Medicare's Facility Affiliation Data lists Monica A. Diaz at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

• Sierra Medical CenterEl Paso, TX · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 450668
• The Hospitals of Providence - East CampusEl Paso, TX · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 670047
• The Hospitals of Providence Transmountain CampusEl Paso, TX · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 670120

Practice locations

Addresses where Monica A. Diaz is enrolled with Medicare (CMS data updated October 2, 2026).

• 3270 Joe Battle Blvd, Suite 312El Paso, TX 79938 (915) 849‑2700

Group practices

Medicare enrollment lists Monica A. Diaz as a member of this group (CMS data updated October 2, 2026).

• Texas Oncology PA1,014 clinicians in the group

Specialties

• Medical Oncologyprimary
• Internal Medicinealso

Find other Medical Oncology doctors in Texas →

Other oncologists in El Paso

Clinicians with the same Medicare primary specialty in El Paso, TX — not a recommendation.

• Jesus Gomez, MD
• Ines J. Sanchez-Rivera, MD
• Mathews L. George, MD
• Arsenio G. Lopez Iii, MD

All oncologists in El Paso →

Other clinicians in Texas Oncology PA

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Christine L. Long, NP
• Jennifer R. Ashun, NP
• Amy Eastman, MD
• Gilberto Jimenez Justiniano, MD
• Paul J. Michiels, MD
• Joyce Villasenor Rocha, NP

Clinician information

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians